/// <summary>
/// Ctor.
/// </summary>
/// <param name="statementSpec">is a container for the definition of all statement constructs thatmay have been used in the statement, i.e. if defines the select clauses, insert into, outer joins etc.
/// </param>
/// <param name="services">is the service instances for dependency injection</param>
/// <param name="statementContext">is statement-level information and statement services</param>
/// <throws>com.espertech.esper.epl.expression.core.ExprValidationException if the preparation failed</throws>
public EPPreparedExecuteIUDSingleStream(
StatementSpecCompiled statementSpec,
EPServicesContext services,
StatementContext statementContext)
{
var queryPlanLogging = services.ConfigSnapshot.EngineDefaults.LoggingConfig.IsEnableQueryPlan;
if (queryPlanLogging)
{
QueryPlanLog.Info("Query plans for Fire-and-forget query '" + statementContext.Expression + "'");
}
HasTableAccess = statementSpec.IntoTableSpec != null ||
(statementSpec.TableNodes != null && statementSpec.TableNodes.Length > 0);
if (statementSpec.InsertIntoDesc != null && services.TableService.GetTableMetadata(statementSpec.InsertIntoDesc.EventTypeName) != null)
{
HasTableAccess = true;
}
if (statementSpec.FireAndForgetSpec is FireAndForgetSpecUpdate ||
statementSpec.FireAndForgetSpec is FireAndForgetSpecDelete)
{
HasTableAccess |= statementSpec.StreamSpecs[0] is TableQueryStreamSpec;
}
StatementSpec = statementSpec;
Services = services;
StatementContext = statementContext;
// validate general FAF criteria
EPPreparedExecuteMethodHelper.ValidateFAFQuery(statementSpec);
// obtain processor
var streamSpec = statementSpec.StreamSpecs[0];
Processor = FireAndForgetProcessorFactory.ValidateResolveProcessor(streamSpec, services);
// obtain name and type
var processorName = Processor.NamedWindowOrTableName;
var eventType = Processor.EventTypeResultSetProcessor;
// determine alias
var aliasName = processorName;
if (streamSpec.OptionalStreamName != null)
{
aliasName = streamSpec.OptionalStreamName;
}
// compile filter to optimize access to named window
var typeService = new StreamTypeServiceImpl(new EventType[] { eventType }, new string[] { aliasName }, new bool[] { true }, services.EngineURI, true);
FilterSpecCompiled filter;
if (statementSpec.FilterRootNode != null)
{
var tagged = new LinkedHashMap <string, Pair <EventType, string> >();
FilterSpecCompiled filterCompiled;
try {
filterCompiled = FilterSpecCompiler.MakeFilterSpec(eventType, aliasName,
Collections.SingletonList(statementSpec.FilterRootNode), null,
tagged, tagged, typeService,
null, statementContext,
Collections.SingletonList(0));
}
catch (Exception ex) {
Log.Warn("Unexpected exception analyzing filter paths: " + ex.Message, ex);
filterCompiled = null;
}
filter = filterCompiled;
}
else
{
filter = null;
}
// validate expressions
EPStatementStartMethodHelperValidate.ValidateNodes(statementSpec, statementContext, typeService, null);
// get executor
Executor = GetExecutor(filter, aliasName);
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="statementSpec">is a container for the definition of all statement constructs thatmay have been used in the statement, i.e. if defines the select clauses, insert into, outer joins etc.
/// </param>
/// <param name="services">is the service instances for dependency injection</param>
/// <param name="statementContext">is statement-level information and statement services</param>
/// <throws>com.espertech.esper.epl.expression.core.ExprValidationException if the preparation failed</throws>
public EPPreparedExecuteIUDSingleStream(
StatementSpecCompiled statementSpec,
EPServicesContext services,
StatementContext statementContext)
{
var queryPlanLogging = services.ConfigSnapshot.EngineDefaults.Logging.IsEnableQueryPlan;
if (queryPlanLogging)
{
QueryPlanLog.Info("Query plans for Fire-and-forget query '" + statementContext.Expression + "'");
}
HasTableAccess = statementSpec.IntoTableSpec != null ||
(statementSpec.TableNodes != null && statementSpec.TableNodes.Length > 0);
if (statementSpec.InsertIntoDesc != null && services.TableService.GetTableMetadata(statementSpec.InsertIntoDesc.EventTypeName) != null)
{
HasTableAccess = true;
}
if (statementSpec.FireAndForgetSpec is FireAndForgetSpecUpdate ||
statementSpec.FireAndForgetSpec is FireAndForgetSpecDelete)
{
HasTableAccess |= statementSpec.StreamSpecs[0] is TableQueryStreamSpec;
}
StatementSpec = statementSpec;
Services = services;
StatementContext = statementContext;
// validate general FAF criteria
EPPreparedExecuteMethodHelper.ValidateFAFQuery(statementSpec);
// obtain processor
var streamSpec = statementSpec.StreamSpecs[0];
Processor = FireAndForgetProcessorFactory.ValidateResolveProcessor(streamSpec, services);
// obtain name and type
var processorName = Processor.NamedWindowOrTableName;
var eventType = Processor.EventTypeResultSetProcessor;
// determine alias
var aliasName = processorName;
if (streamSpec.OptionalStreamName != null)
{
aliasName = streamSpec.OptionalStreamName;
}
// compile filter to optimize access to named window
var typeService = new StreamTypeServiceImpl(new EventType[] { eventType }, new string[] { aliasName }, new bool[] { true }, services.EngineURI, true);
var excludePlanHint = ExcludePlanHint.GetHint(typeService.StreamNames, statementContext);
var queryGraph = new QueryGraph(1, excludePlanHint, false);
if (statementSpec.FilterRootNode != null)
{
ExprNodeUtility.ValidateFilterWQueryGraphSafe(
queryGraph, statementSpec.FilterRootNode,
statementContext, typeService);
}
// validate expressions
EPStatementStartMethodHelperValidate.ValidateNodes(statementSpec, statementContext, typeService, null);
// get executor
Executor = GetExecutor(queryGraph, aliasName);
}
